<template>
  <div class="app-container">
      <!-- 顶部 Header 区域 -->
    <mt-header fixed title="黑马程序员-Vue项目">
      <span slot="left" @click="goBack" v-show="flag">
        <mt-button icon="back">返回</mt-button>
      </span>
    </mt-header>
      
      <!-- 中间的 路由 router-view 区域 -->
	  <transition>
      	<router-view></router-view>
	  </transition>


      <!-- 底部 Tabber 区域-->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-lrc" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-lrc" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-lrc" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart">
               <span class="mui-badge" id="badge">{{ $store.getters.getAllCount }}</span>
        </span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-lrc" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>


  </div>
</template>

<script>
export default {
  data(){
    return{
      flag:false
    }
  },
  created(){
    this.flag = this.$route.path === '/home' ? false : true;
  },
  methods:{
    goBack(){
      //点击后退
      this.$router.go(-1);
    }
  },
  watch:{
    '$route.path':function(newVal){
      if(newVal === '/home'){
        this.flag = false;
      }else{
        this.flag = true;
      }
    }
  }
}
</script>

<style lang="scss" scoped>

  .mint-header{
    z-index:99;
  }
  .app-container{
    padding-top: 40px;
	overflow-x: hidden;
	padding-bottom: 50px;
  }
  .v-enter{
	  opacity: 0;
	  transform: translateX(100%);
  }
  .v-leave-to{
	  opacity: 0;
	  transform: translateX(-100%);
		position: absolute;
  }
  .v-enter-active,.v-leave-active{
	  transition: all 0.5s ease;
  }
  //修改类名 ，解决 tabber 点击无法切换的问题
  .mui-tab-item .mui-tab-item-lrc .mui-active{
	  color:007aff;
  }
  .mui-bar-tab .mui-tab-item-lrc {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-lrc .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-lrc .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>